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Copolymerization of styrene and isoprene with Ni(acac)2-methylalumoxane catalyst

✍ Scribed by Kiyoshi Endo; Koji Masaki

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
247 KB
Volume
16
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Copolymerization of styrene (St) and isoprene (IP) with nickel(II) acetylacetonate [Ni(acac)~2~] and methylalumoxane (MAO) catalyst was investigated. It was found that the Ni(acac)~2~‐MAO catalyst is effective for the copolymerization of St and IP. From the copolymerization of St (M~1~) and IP (M~2~) and IP (M~2~) with the Ni(acac)~2~‐methylalumoxane catalyst, the monomer‐reactivity ratios were determined to be r~1~ = 1,18 and r~2~ = 0,88, i.e., ideal copolymerization was found to proceed to give perfectly random copolymers without formation of any homopolymer. The microstructure of IP units in the copolymers exhibits high cis‐1,4 contents.

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